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vW Select® (50)

Ristocetin CoFactor Assay — C/N 106730

vW Select is a Ristocetin CoFactor Assay System comprised of optimized reagents, control plasmas, and lot specific technical information for use in the detection of von Willebrand Disease (vWD). The materials provided in the vW Select system have been specifically selected to provide improved performance  and repeatability compared to ordinary component combinations found in existing Ristocetin CoFactor Assay Systems.

Net Contents: 50 test Kit
Lyophilized Platelets 2 x 10.0mL
vW AggRecetin Reagent 2 x 15mg
vW Normal Reference Plasma 5 x 0.5mL
vW Abnormal Control Plasma 5 x 0.5mL
vW Normal Control Plasma 5 x 0.5mL
Tris Buffered Saline 3 x 10.0mL
AggRecetin Diluent 2 x 2.0mL


Product Overview

The materials provided in vW Select System have been specifically selected to provide improved performance and repeatability compared to ordinary component combinations found in existing Ristocetin CoFactor Assay Systems.

Ristocetin CoFactor is the in vitro activity of von Willebrand Factor which is responsible for the agglutination of platelets in the presence of Ristocetin. Decreased von Willebrand Factor is associated with the von Willebrand Disease. The quantification of the Ristocetin CoFactor Activity is useful in the evaluation and diagnosis of this coagulopathy. It is also useful when monitoring patient response to therapy. Levels of this Ristocetin CoFactor Activity are determined by the ability of the test plasma and Ristocetin to induce the agglutination of a standardized platelet suspension. Results are determined by using a lot specific Standard Reference Curve.

Quick Facts

  • Quantify Ristocetin CoFactor Activity
  • Complete Ristocetin Factor Assay Kit
  • 50 determination kit
  • Formulated to improve assay performance and reduce variability
  • Achieve more linear standard curves
  • CLIA compliant for simplified implementation
  • Cost effective

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